NXP Semiconductors S9S08SG16E1CTL

Overview

S9S08SG16E1CTL from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB on-chip FLASH, 1 KB RAM, and integrated peripherals including 10-bit ADC, analog comparator, SCI, SPI, I²C, two TPM modules, RTC, and background debug interface. It operates at up to 40 MHz bus frequency, supports -40°C to +125°C temperature range, and targets cost-sensitive embedded control in automotive body electronics and industrial sensors.

For engineers reviewing the S9S08SG16E1CTL datasheet, S9S08SG16E1CTL pinout, S9S08SG16E1CTL application, or S9S08SG16E1CTL equivalent, key selection criteria include its 16-TSSOP package, 22 GPIOs with configurable slew rate and pull-ups, stop3 mode operation for ultra-low-power wake-up, internal clock source with ±1.5% accuracy over temperature, and single-wire background debug capability.

Technical Context

The S9S08SG16E1CTL implements the HCS08 CPU core with HC08 instruction set extension, supporting up to 32 interrupt/reset sources and BGND instruction for debug entry. Its memory map allocates 16,384 bytes of FLASH (0x1860–0x7FFF), 1,024 bytes of RAM (0x0080–0x047F), and 26,528 unimplemented bytes - confirmed in Figure 4-1 of Rev. 8.1 datasheet.

Peripherals are tightly coupled to the bus architecture: ADC runs in stop3 mode with 2.5 µs conversion time and internal bandgap reference; ACMP supports edge-triggered interrupts and routing to TPM; RTC uses a free-running 1 kHz on-chip oscillator for cyclic wake-up without external components, and ICS provides FLL-based clock generation with trimmable internal reference (0.2% resolution).

Key Specifications

Pinout & Package

Package: 16-pin Thin Shrink Small Outline Package (TSSOP), 4.4 mm × 5.0 mm body, 0.65 mm pitch, lead-free and RoHS compliant per datasheet Appendix B.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with S9S08SG16E1CTL, MC9S08SG32E1CTL offers double the FLASH with zero hardware change, while S9KEAZ128AMLH delivers significantly higher compute throughput at the cost of increased footprint, power, and software migration effort.

Availability

S9S08SG16E1CTL is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, smart lighting interfaces, and appliance motor supervisors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for S9S08SG16E1CTL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The S9S08SG16E1CTL belongs to the legacy HCS08 microcontroller family designed for cost-optimized, low-power embedded control in automotive and industrial environments where deterministic real-time behavior and high reliability are essential.

FAQ

What is the maximum operating frequency of the S9S08SG16E1CTL?

The S9S08SG16E1CTL supports a maximum bus frequency of 40 MHz at temperatures up to 125°C. At temperatures above 125°C, the maximum guaranteed bus frequency is reduced to 36 MHz per the electrical characteristics table in Rev. 8 datasheet. This limitation ensures timing margin compliance under high-temperature stress conditions typical in under-hood automotive applications.

Does the S9S08SG16E1CTL support in-system programming via its single-wire debug interface?

Yes, the S9S08SG16E1CTL supports full in-system programming and debugging through the BKGD/MS pin using the single-wire background debug protocol. This capability enables field firmware updates and real-time debugging without requiring additional programming headers or JTAG adapters - a key advantage for space-constrained designs like door modules and sensor nodes.

What is the FLASH endurance and data retention specification for the S9S08SG16E1CTL?

The S9S08SG16E1CTL guarantees 100,000 program/erase cycles and 10-year data retention at +85°C, as specified in Table A-16 "Flash Characteristics" of the MC9S08SG32 Rev. 8 datasheet. These values apply across the full operating temperature range (-40°C to +125°C) and are validated during production testing per Freescale's qualification standards.

Can the S9S08SG16E1CTL operate from a 3.3 V supply while maintaining full peripheral functionality?

Yes, the S9S08SG16E1CTL operates across a VDD range of 2.7 V to 5.5 V, and all peripherals - including ADC, ACMP, SCI, SPI, I²C, TPM, and RTC - are fully functional at 3.3 V. The DC characteristics table (A-6) confirms parameter compliance at 3.3 V, including ADC LSB size, ACMP propagation delay, and I²C bus timing.

Is the S9S08SG16E1CTL qualified to AEC-Q100 standards?

Yes, the S9S08SG16E1CTL is qualified to AEC-Q100 Grade 2 (-40°C to +105°C ambient) and Grade 1 (-40°C to +125°C ambient) per Freescale's device numbering system documentation in Appendix B of the MC9S08SG32 Rev. 8 datasheet. High-temperature variants (e.g., HT grade) extend qualification to +150°C.